TPA2012D2_15 Datasheet, PDF (6/23 Pages) Texas Instruments – 2.1 W/CH STEREO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER

TPA2012D2
SLOS438D – DECEMBER 2004 – REVISED JUNE 2008 .................................................................................................................................................. www.ti.com
TEST SET-UP FOR GRAPHS (per channel)
+
Measurement
Output
-
C_{I RI}
C_{I RI}
TPA2012D2
IN+
OUT+
IN-
V_DD
OUT-
GND
Load
30 kHz
Low Pass
Filter
+
Measurement
Input
-
+
V_DD
-
1 mF
(1) C_I was Shorted for any Common-Mode input voltage measurement.
(2) A 33-µH inductor was placed in series with the load resistor to emulate a small speaker for efficiency measurements.
(3) The 30–kHz low–pass filter is required even if the analyzer has an internal low–pass filter. An RC low pass filter (100
Ω, 47 nF) is used on each output for the data sheet graphs.
6
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